The Agilent/Keysight P382A is a precision waveguide variable attenuator for microwave test and measurement applications operating across the 12.4 to 18 GHz band. Direct-reading attenuation control is achieved through resistive card rotation, delivering stable performance independent of temperature and humidity variations. The instrument provides 0 to 50 dB attenuation with ±0.2% (or 0.1 dB minimum) accuracy and handles continuous-wave power levels to 5 Watts while maintaining a maximum VSWR of 1.15 across the full attenuation range.
Technical Specifications
• Frequency Range: 12.4 to 18 GHz
• Attenuation Range: 0 to 50 dB
• Attenuation Accuracy: ±0.2% or 0.1 dB (whichever is greater)
• Incremental Attenuation Accuracy: ±2% of the reading in dB, or 0.1 dB (whichever is greater)
• Residual Attenuation (zero setting): Less than 1 dB across waveguide range
• Backlash: Less than 0.3 dB at 50 dB
• Maximum CW Power: 5 Watts
• Maximum VSWR: 1.15
• Reflection Coefficient: Less than 0.07
• Waveguide: EIA WR-62 MIL-W-85/1-090
• Flange Type: UG-419/U MIL-F-3922/70A-008
– Key Features
• Direct-reading precision adjustment via resistive card rotation
• Large, legible dials for field operation
• Insensitive to environmental temperature and humidity changes
• Bi-directional operation due to symmetrical internal construction
• Consistent attenuation stability from 0 to 50 dB
– Typical Applications
The P382A serves microwave test benches, RF signal conditioning systems, and power level control circuits in the Ku-band frequency window. Its low VSWR and minimal backlash make it suitable for precision measurement setups requiring repeatable attenuation values.
– Compatibility & Integration
Designed for WR-62 waveguide systems with UG-419/U flange interfaces. Direct replacement compatibility exists with K382A, R382A, and X382A variant models. Note: Product status is obsolete.
